You Bet Hey
Being a Yooper......Sauna's (pronounced correctly as Saoouunah) has been a part of my life since I can remember. In the town I lived in in Yooperland....there was a wood fired sauna in almost every back yard. The Finndians (northern cajuns) use em regularly. I remember many public saunas that held about 25 folks at a crack. They were by local taverns and were marked by a big red bullseye as their marking. You could pay $1 to take a sauna and got a towel as part of the deal.
Wood is the only way to go unless your zoning, etc. does not allow them. Indeed the Finns here call electric sauna's "Like pissing in a light socket, hey".
Be careful what kind of rocks you use. Some stones will absorb water and explode if overheated. It is best to test your rocks a few times before you go nuts as a blasting rock on your first sauna can be a rather nasty experience. We get our rocks from the shores of Lake Superior. Not sure what they are...but we know what to look for and there are those that are better than others. We sort out the ones that are about fist sized. Also, be sure that your sauna is not drafty, but has a good source of fresh air. You do not want to seal yourself into a tiny room with no fresh air. We like an air draft that goes by our heater so that the room is not drafty, but has plenty of fresh air while staying nice and toasty.
The traditional sauna experience I was raised with goes like this. DO NOT RUSH THE EXPERIENCE! It is also nice to keep the sauna quiet and use a little candle (one that will not melt) a oil candle, or other source of minimal light...the public ones I mentioned had a little tiny yellow window to the changing room for light..we like the flickering light from the door of our wood heater. First heat up the sauna to the max temp you can handle. The first half hour or so is done dry until you break a really good sweat. NO STEAM UNTIL YOU ARE SWEATING...... Then, the second half hour is with steam off of the rocks. Then the last half hour is dry again. After the steam part, a good splash of cold water or a jump in the lake/pool if you have it is very refreshing. It also shocks your system and skin pores. Some of us real kooks roll in the snow, but that can kill you if you are not ready for it. Actually a big hole cut in the ice of a lake is really a nice way to go in the winter. It is far less shocking than the snow roll and you will be surprised as how mellow it really is.
A little eucalyptus oil in the water you put on the rocks is nice also. Helps open up the sinuses. The Finns always beat each other (gently) with fresh cedar boughs during the sauna also. This help stimulate the skin and slough off the dead skin cells. At minimum...use a loofa sponge on each others backs. After the sauna we take a long cold as you can handle shower with lots of soap. We use Kirks Cocoa Castile. Then.....we usually just go to bed and sleep as long as we can. You will wake up like a new baby the next day.....refreshed like you cannot imagine.
Regular saunas are very good for your health...but be sure to work up slowly if your body is not familiar with this treatment. Folks in poor health should be very careful to ease into this process. I know old Finndians who are in their mega old age that take saunas several times a week, summer and winter. They all are some of the healthies folks I know.
Drink lots of fluids before and during your sauna. Avoid alcohol altho they used to make a "Sauna Beer" here that was a low alcohol brew just for chugging while taking saunas. We always keep a pitcher of fresh cold well water handy.
The locals here gather as families and friends and young and old take their saunas au natural. The Finnlanders and Indians have the sauna and sweat lodge in common and were actually the first folks to bathe regulary. Skinny, fat, young, old and ugly all mix and there is no thought of sexuality as it is TOO HOT to have sex in a sauna.....they are sacred places for bathing. Some Yuppie types that vacation in our area try to have sex in the sauna and almost die from the experience. Dumb Yuppies!
Do a Google Seach for House of Finnland for your sauna accessories. A Valmut thermometer is a good addition. I also agree that you need to be careful with safety and what you use for the barrier behind your cedar or redwood. Another thing.....NO METAL OR NAIL HEADS anywhere where your naked butt may make contact. Also a "drunk rail" around the heater or rocks is appropriate as a trip or fall onto the hot stuff can ruin a good sauna. Be sure the whole place can be sprayed with a garden hose for cleaning (drain in the floor for sure) and be sure not to let any soap get on the benches, etc. unless you plan on cleaning them each and every time you use the sauna. We sit on towels and keep the place nice and sanitary.
Hope you enjoy.....we sure do.... ps.....I should copywright the term "Finndians" as it is my original term for us "northern cajuns"!